Three-dimensional puzzle



FIG. 1 is a front view of a three-dimensional puzzle.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a left side elevational view thereof, the right sideelevational view being a mirror image of the left side view.

FIG. 4 is a top plan view of the three-dimensional puzzle; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a three-dimensional puzzle, as shown anddescribed.